The peak of tourist season in Vienna usually happens during April until October. Knowing when to visit Vienna early enough will save you the trouble of getting caught with the crowd which is a total killer joy. July and August are months where the crowd is thickest, and December bookings are also heavy because of the festive mood during this time. Making early reservations is a surely a wise decision to spare yourself from the hassle of last minute planning. There are a lot of hotel rooms available and at cheap rates during off-season.
Thank to the fact that the climate in Vienna is moderate subalpine at an average of 32°F (0°C) in January and 66°F (19°C) in July, it has about the same feel in its four seasons as that of New York’s. Viennese summer may not be relatively humid unlike New York but you would not want to perspire much because of the sticky feeling after. Summer is from Easter until the middle of October. The best time to have your Vienna vacations are during spring and fall due to the mild weather condition at this times